Bitcoin users are warned well in advance against the threat posed by quantum computers. A well-known Malaysian cybersecurity expert and associate professor, Dr. Zuriati Ahmad Zukarnain recently explained about the developments in computing technology and its implications on cryptocurrencies in their current form.
Dr. Zukarnain, while speaking to a reporter from one of the Malaysian news publication stated that the rapid developments in quantum computing have now made it possible for hackers to compromise the private keys associated with Bitcoin wallet addresses. She said,
“Quantum computers are able to create a ‘large factorization’ and can detect the public and private keys used in Bitcoin transactions… The threat is when the ‘private key’ is sniffed by third parties, they are free to make transactions using a hacked account as the ‘private key’ proves the ownership of a Bitcoin address used to send and receive the currency.”
http://www.newsbtc.com/2017/06/10/malaysian-security-expert-warns-bitcoin-users-cyber-attacks/